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From SQL to AI: Building Intelligent Applications with ClickHouse and LangDB

Matteo Pelati, Co-founder at LangDB

As AI becomes a driving force behind innovation, building applications that seamlessly integrate AI capabilities with existing data infrastructures is critical.

In this session, we explore the creation of agentic applications using ClickHouse and LangDB. We will introduce the concept of an AI gateway, explaining its role in connecting powerful AI models with the high-performance analytics engine of ClickHouse. By leveraging LangDB, we demonstrate how to directly interact with AI functions as User-Defined Functions (UDFs) in ClickHouse, enabling developers to design and execute complex AI workflows within SQL.

Additionally, we will showcase how LangDB facilitates deep visibility into AI function behaviors and agent interactions, providing tools to analyze and optimize the performance of AI-driven logic. Finally, we will highlight how ClickHouse, powered by LangDB APIs, can be used to evaluate and refine the quality of LLM responses, ensuring reliable and efficient AI integrations.

The slides can be found at https://github.com/ClickHouse/clickhouse-presentations/blob/master/2025-meetup-singapore/Talk%203%20-%20LangDB%20-%20Singapore%20meetup_25Feb25.pdf

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